I can tell you that it is on the back side of the fuse panel which is by your left knee when you sit in the car. Unfortunately, I don't know exactly which relay, as there are at least 6 under there, and my manuals don't give the exact location. I would love to know if you figure it out.
On the firewall to the left of the wiper motor
under the coolant bottle, the green relay is the fuel pump relay
The relay is located on the back side of the fuse box. You have to crawl under the driver's side steering wheel in order to see the relays. The relay in the BLUE socket is it.
Under the hood in the fuse/relay module.
On the back side of the fuse box the relays next to the first 2 on the left are the a/c blower motor relay & a/c control relay. The one on the far right is the warning buzzer & a/c compressor relay
In the vicinity of the passenger headlight.
Have your Pontiac dealers parts department print out a picture of the parts location for you. They will do this if you ask them.
Fuel pump location?
under driver side main fuse panel there are 3
Where is the fuel pump relay on a 1992 pontiac transport van
On the upper drivers side firewall near brake booster.
For the fuel gauge? In the gas tank on the fuel pump.